On 2/08/2011 2:57 AM, Arthur Flexser wrote: > Wouldn't lda data_addr,y (without the parentheses) do the equivalent? > Add data_addr to y and load the a register from the address $8020? > > Art > No, because lda data_addr,y adds a constant to y, not a variable location. -- http://www.johnkent.com.au http://members.optusnet.com.au/jekent